| Denis Lemieux | |
| Riding: | Chicoutimi—Le Fjord |
| Parliament: | Canadian |
| Term Start: | October 19, 2015 |
| Term End: | December 1, 2017 |
| Predecessor: | Dany Morin |
| Successor: | Richard Martel (2018) |
| Birth Place: | Chicoutimi, Quebec |
| Profession: | Entrepreneur |
| Party: | Liberal |
Denis Lemieux (born 1964) is a Canadian politician, who was elected to represent the riding of Chicoutimi—Le Fjord in the House of Commons of Canada in the 2015 Canadian federal election.[1] Citing family reasons, he announced his resignation on November 6, 2017.[2] It took effect on December 1, 2017.
Lemieux holds a bachelor's degree in general engineering and has held a variety of positions in industrial companies in the region.